Title:

Extreme Temperature Insulation Upgrade Package

Number:

683

Release Date:

06/11/2024

Revision Number:

Not Applicable

Revision Date:

Not Applicable

Chassis Type:

Enforcer, Velocity

Component Description:

Aearo Tech Insulation Kit Installation

Parts:

See Table Below

Subject:
Cab insulation upgrades are available as a product enhancement to provide additional support for the HVAC
system during periods of excessive heat.
Description:
IMPORTANT: There are multiple variations of each cab type (i.e. more than one type of Enforcer Cab). If
you are unsure of your specific cab type, please open a technical support incident on
Pierceparts.com to ensure that the correct kit is ordered for your vehicle.
NOTE: These instructions cover the insulation installation procedure on an Enforcer cab. Other cab
variants may differ from this procedure, but this will serve as a guideline for the general process.
Part Kits:
Part
Number

Enforcer
Engine Tunnels

Part
Number

Enforcer Door
Kit

Part
Number

Enforcer 7010

4473499

MX13

4473473

Enforcer Doors

4545696

Enforcer 7010 PUC

4473507

DD13

4474560

Enforcer 7000

4490367

ISL (L9)

4473487

Velocity Door
Kit

Part
Number

Enforcer 6010

4490370

X15

4473492

Velocity Doors

4545729

Velocity 6010

4490373

T3

4516537

Enforcer 8410 PUC

4519060

Velocity 7010

4521598

Velocity Engine
Tunnels

Part
Number

Enforcer 6000

4545661

X12-X15 (ISX)

4516530

Enforcer 7010 Notch

4545673

L9-DD13

4513527

Cab

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PARTS BULLETIN #683
Interior Insulation:

Backwall Parts (First Layer)

Backwall Parts (First Layer)

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Backwall Layer 1

Backwall Parts (Second Layer)

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Backwall Parts (Second Layer)

Backwall Layer 2
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Rear Sidewall Parts

Mid Sidewall Parts

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B-Pillar Parts

Sidewall Parts

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Rear Sidewall, Mid Sidewall, and B-Pillar

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Rear Sidewall, Mid Sidewall, and B-Pillar

Ceiling Parts

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Ceiling Parts

Overhead and Slant Ceiling Parts

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Ceiling Parts

Ceiling
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Under Mid Seat Parts

Threshold and Front Seat Parts

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Threshold and Under Seat Parts

Under Seat/Threshold/B-Pillar

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Under Seat/Threshold/B-Pillar

Under Seat/Threshold/B-Pillar

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Panel Insulation:

Backwall Panel Insulation

Rear Sidewall and Chamfer Panel Insulation

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Mid Sidewall Panel Insulation

Headliner Panel Insulation

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PARTS BULLETIN #683

Headliner Panel Insulation

Headliner Panel Insulation

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Door Panel Insulation
Engine Compartment/Underbody:

Engine Tunnel Insulation

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Engine Tunnel Heatshields

Engine Tunnel Heatshields

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Engine Tunnel Heatshields

Under Crew Cab Insulation (Layer 1)

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Under Crew Cab Insulation (Layer 1)

Under Crew Cab Insulation (Layer 2)

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Under Crew Cab Insulation (Layer 2)

Under Crew Cab Heatshields

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Under Crew Cab Heatshields

Crew Cab Underfloor
If any additional support is needed, please open a technical support incident on Pierceparts.com.
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